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The popular claim that every star you see is already dead is the opposite of true — naked-eye stars are so relatively close and live so extraordinarily long that astronomers estimate only about one di
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The popular claim that every star you see is already dead is the opposite of true — naked-eye stars are so relatively close and live so extraordinarily long that astronomers estimate only about one di

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The light from every star is old, but naked-eye stars are nearby and their lives are vastly longer than the delay. The familiar night sky is not a stellar graveyard.

The idea that most stars in the night sky are already dead begins with a true statement: light takes time to travel. Every star is therefore seen as it was, not as it is at some shared present instant. The mistake comes next. The stars visible withou... [5452 chars]

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Source: Space Daily

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